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Noun: subclass Archaeornithes
  1. Primitive reptile-like fossil birds of the Jurassic or early Cretaceous
    - Archaeornithes

Type of: class

Part of: Aves, class Aves

Nearest

subaudition
subbase
subbing
subcategory
subclass
subclass Acnidosporidia
subclass Actinopoda
subclass Alismatidae
subclass Amphineura
subclass Anapsida
subclass Archaeornithes
subclass Archosauria
subclass Arecidae
subclass Asteridae
subclass Branchiopoda
subclass Caryophyllidae
subclass Cirripedia
subclass Cnidosporidia
subclass Commelinidae
subclass Copepoda
subclass Crossopterygii